Closed-loop circulation roasting oil extraction system and process

Abstract

The invention provides a closed-loop circulation roasting oil extraction system and process. The system comprises a conveying and feeding device, a rotary roasting device, a gas-dust separation device, a fractional condensation device, a closed circulation and non-condensable gas treatment device and a material treatment device. With the closed-loop circulation roasting oil extraction system adopted, the problems of low safety, high possibility of the blockage of an oil-gas outlet pipeline, insufficient roasting, and low actual oil yield of an open system in the prior art can be effectively solved. According to the system and process of the invention, nitrogen is introduced into the system for closed circulation, the oxygen content in the system is strictly controlled to be within 10%, sothat explosion danger is eradicated, and meanwhile the nitrogen consumption and energy consumption are reduced. A downstream process is adopted to prevent an oil-gas outlet pipeline from being blocked, materials are fully roasted, and the oil yield is high. Continuous and efficient production of the whole system is achieved through effective connection of all devices and efficient utilization of energy.

Description

technical field [0001] The invention relates to the technical field of oil plant extraction production, in particular to a closed-circuit circulation roasting oil plant extraction system and process. Background technique [0002] Extraction of oil from oil-containing materials in existing industrial production mainly includes extraction and heating. Oil extraction by extraction is based on the principle of similarity and compatibility. The material reacts and dissolves with the extractant. After stirring and centrifuging, most of the organic matter and oil can be extracted, and then the fuel oil can be obtained through back refining. The heating oil extraction method is to heat the material to a certain temperature under anaerobic conditions to crack the hydrocarbons and organic matter, and condense and recover them. [0003] The steamer distillation process is a typical heating oil extraction process. This process uses a vacuum to lower the boiling point and cooperate with...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to solve the problems of low safety of the open system in the prior art, easy blockage of oil and gas outlet pipelines, insufficient roasting, and small actual oil production, and provide a The closed-circuit circulation roasting and extracting oil plant system, by feeding nitrogen into the system for closed-circuit circulation, strictly controls the oxygen content in the system within 10%, eliminates the danger of explosion, and saves nitrogen consumption and energy consumption at the same time; The direction of the system is consistent, high-temperature oil and gas and materials are discharged from the roasting device at the discharge end, preventing high-temperature oil and gas from condensing, avoiding oil and gas outlet pipeline blockage, fully roasting materials, and higher oil production

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